Yes, but when you're paying for a day aboard a cruise ship and are stuck in a Florida port for that day it's not all that exciting. I can spend a day in Fort Lauderdale anytime and it doesn't cost us $200 for the privilege of being there.
Most of the more traveled Princess cruisers do not appreciate spending a turn-around day doing nothing more than returning to port Everglades to pick up new passengers vs. traveling to more distant islands in the Caribbean.

RichC, you are speaking for yourself, not most seasoned cruisers. Do a Carib 7 day and count the 100s of pax doing a B2B. E. Carib, then W. or reverse. Ships return to FL to pickup new pax and all the lines do it. We have been doing a Carib. B2B every winter for years. The 7 dayers say, they would love to do it, but have to get back to work.

O F C'er

__________________Experiences over the years enabled me to have all the answers, but not necessarily corresponding with your questions.